The affection is often undiagnosed at the first stage. The second stage is characterized by a chronic suppurative canaliculitis with intra-canalicular concretions involving in many cases the lower canaliculus. Our 6 cases have been treated by a posterior canaliculotomy, a microsurgical evacuation of the concretions and a lacrimal tubing. It is not a fungal infection but a bacterial disease due to Actinomyces. Surgical treatment is very effective.